As a Hollywood actress Cameron Diaz is all too familiar with being scrutinized, but she is using Instagram to spark a very important conversation on aging. The 43-year-old star showed how proud she is of her natural beauty with a no-makeup selfie.

In the fresh-faced photo Diaz cracks a smile while holding her latest work The Longevity Book. "I'm so excited to continue the conversation because learning that you can age well, will actually help you age better," the Annie actress wrote in the caption. "If you understand how your body works then you can take action to help keep it in the best possible condition so it can carry you through a long and beautiful life."

Her body-positive message doesn't stop there. Diaz also penned a thought-provoking article for The Body Book's website. "I feel like aging has gotten a bad rap," she explains. For years aging has been associated with negative connotations, as if the natural occurrence is a problem. "What I found was aging isn’t about getting old," Diaz says, "it’s about LIVING… and I want you to live the happiest longest and healthiest life possible."

She continues her inspirational post by adding encouraging words for everyone who can relate. "So let’s start celebrating and living an engaged life, and stop punishing ourselves for not looking a certain way," Diaz says.

Her no-makeup celebration was the perfect way to spark the conversation. It's definitely refreshing to see stars sharing how they look without help from their glamsquads. More celebrities like Jennifer Lopez and Lady Gaga are also jumping on the natural bandwagon. Diaz summed up her post by saying, "My biggest hope for you is that you get to grow old."